Earthworm Dissection: PAP Bio - Vu 7- April 6, 2014 - J Chen
The Digestive System
Un"earth"ed Fun Facts
-There are approximately 6,000 earthworm species worldwide.
-Because earthworms lack lungs, they breathe through their skin.
-The earthworm does not have a specified gender; it contains both egg and sperm.
-An earthworm secretes a lubricating fluid to make burrowing easier.
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